Hoist.



PATENTED NOV. 6, 1906.

C. E. GLESSNER.

HOIST.,

APPLICATION rmm n1 :o.so, 1905.

6 SHEETSSHEET 1. v

P-ATENTED Nov. 6, 1906.

0. E. GLBSSNER.

HOIST. APPLICATION FILED DIE 10.30 1905.

5 SHEETS-SHEET 3.

No. 834,901. PATENTED NOV. 6, 1906.

0. B. GLE'SSNBR.

HOIST.

' APPLIOATION FILED 1120.30. 1905.

' a SHEETS-SHEET 4 IIIIII a No. 834,901. PATENTED NOV. 6, 1906.

' 0. E. GLESSNER.

HOIST.

AP-PLIOATION FILED DEO.30, 1905.

5 SHEETS-SHEET 6.

. Another and ve 2 5 stant-s ee 30 induction t or any ot 'er' desired prime mover. "The source of power in some instances maybe a line-shaft, from which-a number of' hoists'or power-driven devices may be driven I 35 The principles of the invention are-ap' cable not only'to hoists, but to many ot er .vators, transmission-gearing for 4 automobiles, electric traction, arid, in fact, m almost any connection in which it is desired to transmit power from a. driving-shaft, to a I driven shaft under the complete control of the operator under varying loads and; at varying.

. N D STATES PATENT, OFFICE.

CHARLES GLESSQNE'R, OF OURAY, COLORADO, ASSIGNOR OF ONh-HALF TO OOOPE ANDERSON, OF TELLURIDE, COLORADO.

Specification of Letters Patent. Application filed becember 30,1905. Serial No. $198,922.

have invented certainnew and useful Improvements in Hoists, of which the following is a specification accompanied by drawings.

' This invention relates-to hoists, more particularly to hoists driven by a substantially constant-speed motor, although it maybe a .used in any connectionin which it is found ap 'licable. T

prove upon the construction and operation iv 5 of hoists render them more efficient and safe, ,thus preventing accidents and breakdowns andsimplifythe construction of the parts.

invention is to 'ena le the start and stop ping, of the apparatus; under varia le-loads-to be 'perfectlycontrolled in such manner that; ,power issa'v'ed,-and the full'load need not be thrown upon the motor on starting, but may be applied radually, thereby permitting con- 5 motors to' be used in situations to whic they have not-heretofore been'found' v applicable. The apparatus may befused with any suitable form of motor as, for instance,-an electric motor of the asynchronous e, a steam-engine, a gasengmfe,

classes of apparatus'as, for instance,-to eleshafting, to

speeds.

Further. objects of the invention will-herpinafter appear; and tov these ends the invention consists ofqapparat'usfor carrying out the-above objects embodying the featuree'of construction, combinations 'of'elements, 5o arrangement'of' parts. havin the'gieneral" .erem- -after fully described andclaimed in, this mode of operation substantia ly as.

specification and-shown in the accompany.-

lhe objects of the invention are to im-' important object of the;

Figure is a'front elevation of a hoist em .bodying the invention. Fi '2 is a trans- Patented Nov. c, 1906. v

verse sectional view on the line 2 2 of Fi I looking in the direction of the arrows. 3 is a rear elevation of the machine.

ig. Fig. 4 .is a transverse'sectional view on the line 4' 4 of Fig. 1 looking in the direction of the ar-- rows. Fi 5 is a longitudinal sectional view of the mac e on theline 5 5 of Fig.6.

machine. Fig. 7-is a ace view in section and gearing of the mac .6 is a top plan view, artlyin section, of the 6 5 partly broken awayof. the main transmissionapparatus an its gearing; 'Q'Fig. f9 an on two controlliiig-levers'together. F1gf10is an enlarged detail horizontal sectional viewl ofone of the ball-and-socket oints. Fig. 1-1

erspective view 0 oneof the bra e-shoes.

.is an enlargeddetail rhorizontal gsectional viewtaken through one of .the ball-and'-* socket-joints which conhect the brake-shoes to their shafts. Fi .-12;is'anenl ed detail 13 is-a transverse enlarged sectional'de' tai view of one of the brake-shoes. Fig. 14

Referring to -thedraw1ngs,'A and B; represent frames rovided' with bearingsQfor the shaft D,-w ch is, connected to 'bedriven *is a longitudinal sectional view through thef 5 rela-tiveposif from the 'source ;.-ofpower, instance. .17: represented byt'wo constant-speed induction-motors E suitably geared to the shaft D i suitable motors-may provi edfor operate ing the hoist and any. suitable-gearing. may be utilized :forxtho motors to. the

shaft Dr Preferably twomotorsareusedms Y l th ameevH and; lwhich-may be termed this instance shown hollow and provided with hollowtrunnions K inthethe niainfiarnes, or supporting the hoist;

form of sle 00 P 811ml) .de endent lthereofand t loosely. in L in the flange-H and D' is a disk P, to the periphery of which is adapted to be applied a brake or brakes, so that said disk may be held from rotation or permitted'to rotate at full speed or permitted to slip under the brake-shoes. Suitably pivoted to the rotatable disk P on studs are lanetary pinions R, meshing with the gear (I and also meshing with the internally-toothed gear S, having the toothed rim T, adapted to fit beneath the rim U of the brake-disk P. The internally-toothed gear S is fast upon the sleeve K of the hoistingdrum J, being connected thereto in any suitable manner, as by means of a key, and thus rotates therewith. It is obvious that according to whether or not the brake-disk P carrying the pinions R is held from rotation or permitted to rotate at varying speeds the power willbe transmitted from the shaft D to the drum J, and said drum may be operated at varying speeds according to the amount of slip perinitted for-the disk P.

Suitable means are provided for braking the disk P of the planetary gearing, and means are also provided for applying a brake to the drumJ, as by means of the brake-disk V, connected to rotate with the sleeve or hol- .low trunnion K of the drum J inorder to stop: the drum -in any desired position by means of said brake, although, as will hereinafter appear, 'the' load or cage connectedto the" cable may be stopped in any desired p0- sition'by permitting the slip on the disk P to 5 this point the speed of the drum J may be varied as desired up to full speed.

Both disks P and V are provided with grooved peripheries U, and the brake-shoes are adapted to conform to said peripheries. By means of such construction the disks P and V- are centered or maintained in one plane when the brakes are applied. It is more important that the disk P should be 5 centered and prevented from getting out of alinement, since in this instance the brakeshoe is not appliedover the center of the disk,

as in the case of the brake-disk V; but I preferably make the peripheries of both disks alike and construct the shoes substantially alike. The disk V, as stated, is'keyed directly to the sleeve K on the drum, while the disk R, on the other hand, is loose on the shaft D, and for this reason the means for centering the disk add greatly to the eliiciency of compensate for the power applied. From the machine. The grooved disk V, since it is part of the drum, aids in centering the disk P.

The brake-shoes may be constructed in any suitable manner; but I prefer to construct them substantially as shown in detail in Fig. 12, in which W represents a wooden shoe gripped between steel angle-irons X, having inwardly-projecting flanges Y for gripping the shoe W. The upright legs Z of the angle-irons are suitably connected together, as by means of bolts (1, and means are provided for pivoting said angle-irons carrying the shoes W around the periphery of the brake-disks P and V, and operating means are provided for tightening and loosen ng said brake-shoes upon the'periphery of said disks. In this instance the upright legs Z of the angle-irons X are bent outwardly at the heel of each shoe to form lugs or cars I), which are pivoted on the pins 0 between the frames A Hand B l around the periphery of the disks P and Y. According to this construction the disks are maintained in one plane and substantially the whole of the strain comes upon the frames and the operatinglevers are relieved of a large part of the strain. I preferably provide three brakeshoes for each brake-disk, althorghany suitable number may b provided in any suitable arrangement; but I have found three brake- .shoes in the arrangement described to oper ate satisfactorily. The angle-frames X of the brake-shoes are pivoted at suitable intervals around the disks 011 the frames of the machine, and the shoes are of sullicient length to substantially cover the entire periphery of the brake-disks. The toe d of each shoe preferably extends between the forked portion of the angle-irons between the ears b of the shoe immediately in front.

Preferably the webs or vertical legs Z of the shoe angle-irons are thickened at their middle portions 6 and provided with bearings for the brake-beams f connecting the shoes, of which there are three extending longitudinally of the hoist. Suitable means are provided for operating the brake-shoes, and in this instance disks 9 and h are provided adjacent each drum-head and seated in bearings on frames H and I, respectively, in such manner that said disks may be rotated slightly in their bearings. These disks are connected in this instance to be rotated by the hand-leversi and although any suitable means may be provided for operating the brakes, and the disks 9 and h are pivotally connected by levers k to the brake-beams, f, which extend longitudinally across the machine and are connected to the brake-shoes.

One of the objects of this invention is to enable the power for applying the brakes to the disks P and V to be alternately compounded or not, as desired. The machine 1s so constructed that by properly manipulating the hand-levers 'i and j the thrust or levera e may be all applied to one brake or one lever onl levers 834.com-

the ot or as desired, and bly a system of compound levera e the bra e-pressuregon one disk or the ot er may be .eatlynnultiplied over that which. might applied by The leverskfor the brake-shoesonth'e periphery of the brake-disk P are pivoted at the point I to the disk and are pivoted b means of any suita le, form socket lg'oints o to the brake-beams f. The

are preferably provided with turnbuckles-p in order to make their length adjustable. The levers 7c, connected to the disk It at the other side of the drum, are constructed in the same manner and connected to the brake-beams by ball-and-socket joints 0. The brake-shoes for each brake-disk P andV are pivoted on the frames of. the. ma-

chine at the points a, and the shoes extend around the peripheries of the disks from their pivotal points in the proper direction to. ap-

ply the brake-pressure in the most advantageous manner, according to'the'direction of the rotation of the disk to which pressure is applied. The brakes for the disk P extend in the direction of rotation of said disk when power is being applied to the drumJ to raise the load, and the brakes for the diskVpreferably extend in the direction of rotation of the drurnwhen the cable q is unwinding and lowerin the load. In the drawings the brake-s oesW are shown extendingbin the same direction, and this is-correct, the direction of rotation of the disk P. when power is applied to the drum is the same as the direct on ofthe rotation of the disk. V

. the body portions of the The ball-hea s 'b of the brake-beams f are placed in' the sleeves s, and internally-screwthre'adedicaps w are screwed over the ends 11..

of the split sleeves 8,- thereby securing the balls-u in their bearings.

The operating-lever i is fast .to the shaft 1, which is suitab y rotatabl supported in a bearing 2 in the main frame and in a bracket 3. In this instance the level 'fis forked and straddles a toothed segment 4, and the lever is provided with a spring-pressedpawl 5, adapted to codperate with the teeth on the se ment4. As shown, the outer end of the sha t 1 is' provided with a downwardly-extending arm fi fastthereto, to which is pivotally connected one end of a link 7, the other end of said link pivotally connected to an arm'- ball-an arm 16 move together.

ecause the ends of.

8,, in'tu'rn connected to the disk g, as by means of the bolts 9, so that the arm 8 turns .with the disk g. B operating the hand-lever i, the disk g may .be' understood as limiting myself to the connection shown and described for operatin the disk g, because any suitable form o mechanism-may be provided. By pressi the lever '11 inward it will be seen thatthe dis gwill be rotated in a direction to tightenthe rake-shoes u on the eri hery of the disk P .and by pul ing the Ima e-lever outward e rotated. I am not to.

the brake-shoesf'-= on the lever P will be loosened.

Suitable mechanism is provided for operating the brake-shoes on the. disk V. As

shown, the hand-lever j is connected to a e bearing 11 in the frame I an in the bracket 12. ,As-shown, the lever 7' straddles the toothed segment 13, the teeth of which extend in the opposite direction to the teeth on the se ment-4, and a spring-pressed pawl longitudinally-extending shaft 10, su portedin t connecte to the lever j cooperates with said teeth. The shaft 10 is provided with an up wardly-extending arm 14in this instance at its outer end-having one end ofia link 15 pivotally connected thereto, the other end of" said link being pivotally connected to an arm 16, connected to the disk It by suitable means, as the bolts 17, so that'the disk and By ulling the handlevery' outward the disk It wil 1 be rotated in a direction to loosen-the brakes upon the disk V, and by pushing the arm 4' inward the brakes will be tightened on said disk.

Preferably the two shafts 1 and 10 are tied together with a lost-motion connection in such manner that when the lever-arm i is gres'sedinward to, tighten the brakes on the isk P the lost motion maybe taken up and Y action to force the arm y= outward, thereby loosening the brakes on the other disk V.

.the other hand, hyforcing the lever inward the brakes for. the diskV are applie and the lost-motion connection. between the shafts 1 the connecting tie or-coupling brought into and, 10 may be taken-up, thereb forcing the varm I outward and loosenin .t e-brakes on the other disk P. Any suita 1e lost-motion eonnection maybe provided for the shafts 1 and 10 in this instance the shaft 1 being pro.-

vided with afork 18 and the shaft 10 with a cooperatin lug or ear 19, which enters the fork 18 an has acertainplay therein. According to this .construction rotation of one shaft will cause rotation of the other shaft in an opposite direction. 1 I am not to be understood as limiting myself to this construction, e means may be used for because any suitab accomplishing this same end. I

In order to compound the leverage for the brakes and increase the pressure on one disk P or the other one .V, the lovers 1' and 7' must be operated in different directions. If, for

instance, the lever i is pressed inward to apply the brakes to the disk P, the other lever may bepulled outward, thereby loosening the brakes .onthe disk V and at the same time forcing the ends of the brake-beamsf at that side of the drum outwardly, with the ball-and-socket joints oat the opposite ends of the brake-beams as pivotal oints, thus forcing the brake-shoes on the isk P more strongly against the disk. If'the operation of the levers 't and j is reversed, the leverage may be compounded'to apply the pressure more strongly to the brake-disk V. When the lever .y' is pulled outward to apply the brakes to the disk V, if the lever't is forced in- ,Ward at the same time theends of the brakebeams f on the geared side of the drum will be forced outwardly about the ball-andsocket joints at the other ends of the brakebeams as pivotal points, thus increasing the leverage on the brake-shoes for the disk V. It is important to hold the disk P very firmly, especially under heavy loads, and it is also important to hold the drum very firmly in order tostop the cage at any desired point, as in a mining-hoist, for instance.

According to the construction of this machine one brake is thrownoif as the other it thrown on, although the slight lost motion between the operative partspermits the operator to apply the brake to a certaindegree to the drum before the transmission-gear is entirely released, and vice versa. In this Way a skilful operator may readily learn to control his hoist, because he can tell by Inanipulating the lever-arms i andj at just What point he is to release the transmissiongear and apply the brake to the drum. In other words, he may feel his load either in ascendi'ng or descending, and still'accidents due to carelessness are prevented, because both brakes cannot be applied at the same time, and the load could not drop. According to this construction the load may be applied gradually to'-a motor rotating constantly at the same speed, and the-load, on the other hand, may be removedgradually therefrom. If the machine is being used for a mining hoist or elevator, power will be applied to raise the load, and it will be permitted to fall of its own Weight. According to this machine sudden strains on the apparatus are entirely obviated, and all the operations take place gradually. The operator at all times has the machine under'complete control. Automatic controllingmeans are provided for limitin the travel at the top and bottom of the "sha t, and .this automatic controlling means may be adjusted to stop the cage, if in a hoist, at any desired level. In case of an accident this automatic controllin means will stop the apparatus at one or t e other limits of its. travel or in an intermediate point, if it is adjusted for such a stop. I utilize in connection with this controlling means a transmission-gear substantially like the planetarygearing for transmitting power to the drum and a governor'for controlling the operation of said transmission means. The controlling transmission-gearing is c0nnect ed to operate the brakes on the disk V, connected to the drum, so that the drum is stopped automatically. Any suitable form of apparatus may beufirovided for carrying out this object; but I ave shown in this instance a ball-governor 20, having the balls 21,

. carried on arms 22, pivoted at 23 to a cap .24,

33, havi'n an adjusting-nut 34 for adjustingthe lengt of said rod. When the drum speeds up beyond a predetermined limit, the rod 33"will be raised and set in operation the mechanism for apply'in the brakes to the disk V- on the drum. :gtending longitudinally along the back of the machine is ashaft 35, supported in suitable bearings in the.

frame I and in the bracket H. This shaft is provided with a bevel-gear 36, meshing with a bevel-gear 37, carried on a shaft 38, rovided with another bevel-gear 3 -mes 'ng with the large bevel-gear 27 on the disk V, so

that rotation from the disk V is imparted to the shaft 35. This shaft 35 also carries a' small planetary transmission-gearing having the gear 40 connected to rotate with the shaft,-as by means of a key, and meshin with planetary pinions 41, carried on stu $.42, connected to the grooved brake-disk.43, loose on the shaft 35. Internally-toothed gear 44 also meshes with the lanetary pinions 41 and is connected to a s eeve 45, loose on the shaft 35 and provided with collars 46, to

which is pivoted a transversely-extending rod 47, so that the construction acts like a crank and crank-pin. The rod 47 is connectegl to operate the hand-lever j and in this instance. is shownpivoted to said lever, cooperatingwith the brake-disk V.

On the small transmission-gearing are brake-shoes 48 and 49, in this instance ivoted to each other at 50 and substantial y encircling the grooved periphery of the brakedisk 43, thus maintaining the same in one plane. As shown, the lower brake-shoe 48 is connected, by means of the link 50, to the lower end of the governor-operated rod 33, so that when said rod is raised by the operation of the governor the shoe 48 is applied to the periphery of the disk and the disk is partiallyprevented from rotating. The other end of the shaft 35 is provided with a'worm-gear 51, meshing with pinion 52, carried onthe indicator-rod 53, which extends u to the indicator 54 for indicating the love s or oints at which the load or cage is to stop. he indicator-shaft 53 is also provided with-a worm 55, mesh with a pinion 56-, carried by a longitudina shaft 57, en ported in suitable bear' s in the frame F and bracket. H. Said s aft 57 is also provided with a small drum 58, rovided with adjustable stops or roifingers 59, having adjusting-screws 60, a apted to hear u on t e upper brake-shoe 49 when one of said Kngers comes opposite said brakeshoe in the course of'rotation of the shaft 57 and drum 58, thereby forcing said brake-shoe I 5 against the peripher of the brake-disk. I

have described suita le shafting and gearing for operatingtheparts of the automatic controllm means; but I am not to be understood 4 as limiting myself to the construction diszo closed, as .any suitable means may be pro- .vided for this purpose.

In the operation ofthe governor-controlled braking device the application of the'lower ke-s ' bra 0e 48 to the periphery of the brake- 2:5 disk 43 causes rotation of the internal ear 44 and loose sleeve 45 on the shaft 35, t ereby pulling the lever 47 transversely ofthe machine, rocking the hand lever j, thus applythe brakes to the disk'V on the drum with 36 a certain amount of pressureand. partiallyretard' the rotation of the drum and keeping it within the speed limit. The rotation of the shaft also causes rotation in the shaft 57 through the gearing'described, there- 3 5 by rotating the drum 58' and bringing one of thestops59 into contact with the other brakeshoe 49 and forci said brake tightly against the periphery of fiie brake-disk 43, thereby strongly a plyin the brakes thereto and 40, holding sai disk rom rotation. The rod 47, connect the sleeve with the lever j, is

. therefore rawn with maximum force against the lever thereb a l n thebrakes to the disk V With ma iiiniiym rissure. 'At the 45 same time the pawl on han -lever locks said lever in its forward osition an locks the drum from rotation. his locking of the drum 'will occur either at the top or bottom of the travel of the load or at any intermediate oint, accordi to which one of the stops 59 s been brought into operation. This automatic stopping means maybe used asa safet limit only or adjusted for any desired positlon.

Thkindieator ro 53fi s prevideu m gear 61, meshing with a gear 62 on the indicator-disk 54, and saiddlsk is rovided with a'pointer 63, and the disk itsel is marked off into suitable divisions to indicate the oints at which the load is to be stopped. 11 this instance the: ointer is shown stationary, and

the disk revo ves; but any suitable construction may be provided. Preferably the fin gers or steps 59 are slidable in grooves in the eriphery of the drum 58, so that they may 6 5 be adjusted as desired. v

In the operation of the ap aratus the motor or motors E are suppose to becontinuously running at substantiall constant speed. Let it be essumedthstt t e load rep- 7o resentedas, for instance, by a loaded cagehas been stopped at a certain level by applying the brakes to the disk V, connecte to the drum, thereby reventing the drum from rotating. The bra es on the disk P of the transmission-gearing have then been removed, and rotation cannot be imparted to the drum from the shaft D. In order to lower the cage, the, brakeressure is gradually relieved on the drumisk V by pulling the hand-lever 7' 8o toward the o erator away from the drum.

In this case if the drum should speed up the governor 20 will come into operation and au-' tomatically a ply the brakes in order to keep the s eed witiim limits. en the brake-drum is held from rotation by the brakes on the disk V, as described,

if it is desired to raise the cage the hand-lever i. is forced away from the-operator in the direction of the'drum, thereby. beginning to ap- 9o ply the power, and after the power is a plled the lost-motion connection between the andlever shafts comes into operation and begins to relieve the brake-pressure from the drums ,disk V. The construction is suchthat the 5 point at which ower be ins to be applied to the drum and t e brakeeverage is removed from the drum is automatically taken care of but because of the lost motion between the 'connections this point is also within the con- I00 trol of the o erator, so that he can feel the point at whic the load is applied and govern the operation of the hoist accordingly.

A skilful o erator will soon learn to -operate the handevers'i, and j, in accordancewith 1o 5 this construction, back and forth, feeling the load on his drum all the time, so that it can be readily told when more power should be applied or when the drum should be moregreatly retarded. r I o The'automatic controlling means for lim; iting the travel of the load or cage is a plicable to various forms of apparatus. f have shown one application of it in the machine 4 disclosed; but I am not to be understood as limiting the invention to this particular class of apparatus, for it may be' used in connec- 1 tion with the transmission of power wherever it is applicable-as, for instance in connection with elevators, cranes, electric-cars, es-

. pecially on grades, cog-roads, tramways, and

on many classes of mining machine In order to stiffen the frame, tie up er ends of the frames A H and'B I are suitably tied together, as by means of the bolts '100, 12 5 having the nuts 101 and c'ollars 102 for'bracing the frames. These bolts are placed in slots in the upper ends of the frames.

power, comprising a spur-gear and an internall -toothed ear, one of which is connected to t e power-s aft and the other being ada ted to be connected to the load, a friction-disk having planetary gears meshing with both the spur-gear and the internal gear, and a brake cooperating with said friction-disk,

whereby the load may be thrown gradually on the motor onstarting.

2. In a hoist, the combination of a substantially constant speed-motor, a driving or power shaft continuously driven in one d1rection from said motor at substantially constant speed, a variable-speed transmission-gear for connecting the load to the source of power, comprising a spur-gear and an internally toot ed gear, one of which is connected to the power-shaft and the other being adapted to be connected to the load, a friction-diHr having planetary gears meshing with both the spur-gear and the internal gear, and a brake cooperating with said friction-disk, whereby the load may be thrown gradually on the motor on starting, another brake for controlling the descent of the load, and operative connections for controlling both of said brakes.

3. In a hoist, the combination of a source of power, a driving or power shaft, a hoistingdrum, a variable-speed planetary transmission-gear for connecting the drum to the driving-shaft to raise the load, com rising a spurgear and an internally-toother gear, one of which is connected to the power-shaft and the other to the drum, a friction-disk having a grooved periphery and carrying planetary gears meshing with both-the spur-gear and.

the internal gear, a brake having shoes adapted to cooperate with the grooved periphery of said disk, another friction-disk connected to the hoistin -drum and also having a grooved peripher abrake having shoes cooperating with sai second friction-disk,and means for controlling both of said brakes.

4. In a hoist, the combination of a-source of power, a hoisting-drum, a variable-speed transmission-gear for-connecting the drum to the driving-shaft, comprising a spur-gear and an internally-toothed gear, one of which is connected to the power-shaft and the other to the drum, a friction-disk having a grooved periphery and carrying planetary ears meshmg with both the spur-gear and the internal gear, a brake having shoes adapted to 006perate with .the grooved periphery of said disk and thereby aid in centering the disk in the operation ofthe apparatus, and means for operating said brake to control the transmis- "s'ion-gearing and throw the load of the drum upon the source of power gradually.

5. In a hoist, the combination of a source of power, a driving or power shaft, a hoistingdru m loose on said shaft, a variable-speedtransmission'gear for connecting the drum to the driving-shaft comprising a spur-gear and an internally-toothed gear, one of which is connected to the power-shaft and the other to the drum, a friction-disk having planetary gears meshing with both the spur-gear and the internal gear, a brake cooperating with said friction-disk, another brake cooperating with the drum and means for operating said brakes.

- 6. In a hoist, the combination of a source of power, a hoisting-drum, a frictionallycontrolled variable-speed-transmission gear for connecting the drum to the source of power, a brake for controlling said transmis- Sion-gear, a brake for controlling said drum, operative connections for applying the pressure of the brake to the transmission-gear, and means for compounding the brake-pres sure on said gearing.

Sci

7. In a hoist, the combination of a source of power, a hoisting-drum, a frictionallycontrolled variable-smed-transmission gear for connecting the rum to the source of power, a brake for controlling said transmission-gear, a brake-disk and brake for controlling the hoisting-drum when the trahsmission-gear is released, means for applying the pressure of the brakes to the transmission-gearing and to the drum-disk, means for preventing the application of both brakes at the same time, and means for compounding the pressure upon either brake, as desired, thereby increasing the pressure of either brake.

8. In a hoist, the combination of a source of power, a hoisting-drum, a frictionallycontrolled variable-speed-transmission gear for connecting the drum-to the source of power, a drum-disk, a brake co(")pcrating therewith, a brake cooperatingwith the transmission-gear, brake-beams connecting said brakes, controlling-levers for said brakebeams and operative connectionsfor comv. 1:3 .}.I3-ST.T!"} unorr either brakehs desired, said connections ueingso constructed that upon relieving one brake, the pressure of the other brake is augmented.

9. In a hoist, the combination of a source of power, a hoisting-drum, a frictionallycontrolled variable-speed-transmission gear for'connecting the source of ower of the drum to ralse the load, brake-s 1oes for conto release the transmission-gear and permit ing the pressure of the brakes where trolling said transmission-gear'to' throw the load onto the source ofpower gradually and the load to descend by gravity, a brake disk and brake-shoes for controlling the "speed ofthe hoistingkdrum when the'load is descending .by gravity, common brake-beams connecting both sets of brake-shoes, means for relieving one set of brakes when the other brakes are applied, and means for comppunldy t e pressure of one set of brakes is augmented as the other set isrelieved.

10. In a hoist, the combination of a,.source of power, a hoisting-drum, a variable-speedtransmission gear for transmitting power to the drum, means for controlling said transmission gearo and automatic means for controlling the speed of the drum.

1 1. In a'hoist, the combination of a source of power, a driving or power shaft, a hoisting-drum, a frictionally-controlled variables cod-transmission gear for connecting the rum to'the driving-shaft, means for controllin said transmissionear to throw the load 0 the drum onto the living-shaft grad ually, means for permitting the load to de-f scend by avity, means for manually controlling the speed of the drum when the load is descending under gravity, and automatic means for controlling the speed of the drum when the load is descending'un'der gravity.

12. In a hoist, the combination,- of a source of power, a, hoistin -drum, a variable-speed frictionally-control ed transmission-gear for connecting the source ofpower'to the drum when the load is descending, a lost-motion.

to raise the-load, manual means forcontrolling said transmission-gear to throw the load. onto the source of power gradually and 115-.

lease the transmission-gear and ermit the. load to descend by gravity, manua means for controlling the speed of the drum whenthe I load is descending, a lost-motion connection between said two manual controlling means,.

so constructed that one controlling means is thrown out of operation when the other is "thrown into operation, and both may be operated together to a limited'extent.

13. In a hoist, the combination of asour ce of. power, a hoistin -drum', a variable-speed frictionally-control ed transmission-gear for connecting the source of power to the drumto raise the load, manualmeans for controlling said transmission-gear to throw the load onto the source of power: gradually and release the transmission-gear and per- -'mit theload to descend by gravity,'inanual means for controlling the speed'of the drum connection. between said two ,manual controlling means, so constructed that one con trolling means is thrown out of operation when the other is thrown into operation, and both may be operated together to a, limited extent, and automatic controlling means for controlling the speed of the when the load is descending.

frictionally-controlled transmission-gear for connectin the source of power tothe drum 14. In a hoist, the combination'of i of, power, a hoisting-drum, a variable-speed to raise t e load, manual me nsifor con. trolling said transmission geari;to threw the load onto the source of powerhgradually and release the transmission gear and permit the load to descend by gravity, manual means for controlling the speedbffthe drum when the load is descending, alost-motion,

means is thrown out of operation drum, a variable speed transmission gear for connecting the drum to the driving-shaft,

said ear having afriction-disk for control 'ling t e same, brake-shoes coo crating with.

said friction-disk, a revoluble isk rovided with brake-levers connected to sald shoes, manual means for rocking said revoluble disk applying and relieving the brake-shoes for the transmission-gearing, a brake-disk connected to the hoisting-drum, brake-shoes cooperatin therewith, a revoluble disk having brakeevers connected to .said brakeshoes, manual means for rocking said revoluand ap lying ble disk, and thereby relievi the brakes to the drum-dis and rakebeams connecting said sets of brake-shoes.

16; In a hoist, the combination of a source I of power, a hoisting-drum, a variable-speed frictionally-controlled transmissionsgear for} transmittlng power to the drum, said transmissionear having a grooved frictional disk, br

eshoes cooperating with said-w I groovedfrictiondisk and thereby centermg said disk in the operation of the brakes,

a grooveddrum-disk, brake-shoes coo erating therewith, revoluble disks provide with brake levers or armsconnected to said sets of brake-shoes,brakebeams connecting said sets of brake-shoes, hand-levers connected to rock said revoluble" disks forcontrolling the respective sets of 'brakesand automatic means controlled bythe speed of the'fdru m A for limitin the travel of the load.

17. In a oist, the combinationof a hoist;

ing-drum, means for rais' the load by the under is cod 0 t t 9 load when the load is descending coinprlsing a speed governor andafrictionally};

. 5 power applied, means for owering the load vity, means for controlling the" he rum and the limit of travel of Y trolling the speed of the drum when the load transmissionfor controlling the drum-brake and operative controlled variable-speed-transmission gear having a friction-disk and brake-shoes cooperating therewith, said brake-shoes being controlled by the speed-governor and operative connections from said transmissiongear for controlling the speed of the drum and limit of travel of the load.

18. In a hoist, the combination of a source of power, a driving or power shaft, a hoisting-drum loose on said shaft, a spur-gear fast to said shaft, an internally-toothed gear fast to the drum, a friction-disk loose on the shaft and provided with pinions meshing with both the spur-gear and the internally-toothed gear, said friction-disk having a grooved periphery, brake-shoes cooperating with said grooved periphery, a revoluble dlsk movable independently of the drum-brake, arms pivoted to said .disk and to the brake-shoes, a manually-controlled lever for operating said. disk and brake-shoes, and a brake for conis descendin 19; In a hoist, the combination of a source of power, a hoisting-drum, frictionally-controlled variable-speed-transmission gear for applying power to the brake gradually to raise the load,a brake for controlling said car, a brake for controlling the speed of the rum when the load is descending under gravity, a hand-lever for controlling -the transmission-brakes, a hand-lever lost--motion connections between said handleveis whereby both brakes are prevented from being applied at the same time and one rake is automatically removed when the other is applied, thereby enabling the operator to feel the load at all times on the brakelevers.

20. In a hoist, the combination of a source of power, a hoisting-drum, frictionallycontrolled variable-speed-transmission gearing for connecting the drum to the source of power gradually when a load is applied, a brake for controlling said transmission-gear, a hand-lever for controlling said. brakes, a brake and hand-lever for controlling the speed of the drum when the load is descending, said hi.:.nd-levers'being adapted to be operated in opposite directions in order to control the hoist, and a lost-motion connection between said levers whereby one brake is relieved when the other is applied.

21. In a hoist, the combination of a source of power, a hoistingdrum, frictionally-controlled variable-speed-transmission gearing for connecting the drum to the source of power gradually when a load is applied, a

rake for controlling said transmission-gear, a hand-lever for controlling said brakes, a l

of power, a hoisting-drum, l'riet-ionally-coutrolled variable-transmission gearing for connecting the drum to the source of power gradually when a load is applied, a brake for controlling said transmission-gear, a handlever for controlling said brakes, a brake and hand-lever for controlling the speed of the drum when the load is descending, said hand- ]e-vers being adapted to be operated in opposite directions in order to control the hoist, a lost-motion connection between said levers whereby one brake is relieved when the other is applied, brake-beams for connecting said brakes and operative connections for enabling the pressure to be compounded when one brake is applied and. the other is removed, and automatic controlling means for controlling the speed of the drum when the load is descending under gravity.

23. In a hoist, the combination of a source of power, a hoisting-drum, frictionally-controlled varlable-speerl-transmission gearing for .connecting the drum to the sourc eof power gradually when a load is applied, a brake for controlling said transmission-gear, a hand-lever for controlling said brakes, a brake and hand-hzvcr for controlling the speed of the drum when the load is descending, said hand-levers being adapted to be operated in opposite directions in order to control the hoist'and a lost-motion connection between said levers whereby one brake is relieved when the other is applied, brakebeams for connecting said brakes, operative connections for enabling pressure to be compounded when one brake is applied. and the other is removed, automatic controlling means for controlling the speed of the drum when the load is descending under gravity, and for limitingthe travel of the load at the top and bottom as desired, and for stopping the load at intermediate points.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

' CHARLES E. GLESSNER.

W'itnesses: I

HERBERT G. OGDEN. Jr. LEO J. MATTY. 

